﻿/*
 * MIT License
 *
 * Copyright (c) 2018 Clark Yang
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of 
 * this software and associated documentation files (the "Software"), to deal in 
 * the Software without restriction, including without limitation the rights to 
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
 * of the Software, and to permit persons to whom the Software is furnished to do so, 
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all 
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
 * SOFTWARE.
 */

using System;

namespace Loxodon.Framework.Commands
{
    /// <summary>
    /// 
    /// </summary>
	public interface ICommand
	{
		/// <summary>
		/// Occurs when can execute changed.
		/// </summary>
		event EventHandler CanExecuteChanged;

        /// <summary>
        /// Determines whether this instance can execute the specified parameter.
        /// </summary>
        /// <param name="parameter">Parameter.</param>
        /// <returns><c>true</c> if this instance can execute the specified parameter; otherwise, <c>false</c>.</returns>
        bool CanExecute (object parameter);

		/// <summary>
		/// Execute the specified parameter.
		/// </summary>
		/// <param name="parameter">Parameter.</param>
		void Execute (object parameter);
	}
}

